<template>
  <div class="app-container">
    <h2 style="text-align: center;">发布新课程</h2>

    <el-steps :active="3" process-status="wait" align-center style="margin-bottom: 40px;">
      <el-step title="填写课程基本信息"/>
      <el-step title="创建课程大纲"/>
      <el-step title="提交审核"/>
    </el-steps>

    <div class="ccInfo">
      <img :src="coursePublishVo.cover">
      <div class="main">
        <h2>{{ coursePublishVo.title }}</h2>
        <p class="gray"><span>共{{ coursePublishVo.lessonNum }}课时</span></p>
        <p><span>所属分类：{{ coursePublishVo.subjectOne }} — {{ coursePublishVo.subjectTwo }}</span></p>
        <p>课程讲师：{{ coursePublishVo.trainerName }}</p>
        <h3 class="red">￥{{ coursePublishVo.price }}</h3>
      </div>
    </div>

    <el-form label-width="120px">
      <el-form-item>
        <el-button @click="previous">返回修改</el-button>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="publish">发布课程</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>
<script>

  import course from "@/api/course";

  export default {
    data() {
      return {
        saveBtnDisabled: false,           // 定义按钮是否可以被点击
        courseId: "",
        coursePublishVo: {}
      }
    },
    methods: {
      // 返回修改
      previous() {
        this.$router.push("/course/chapter/" + this.courseId);
      },
      // 发布课程
      publish() {
        course.publish(this.courseId).then(resp => {
          this.$message.success(resp.message);
          //跳转拿到 发布页面去
          this.$router.push("/course/list/");
        });
      }
    },
    created() {

      //拿到路由中的id
      let courseId = this.$route.params.courseId;
      if (courseId) {
        this.courseId = courseId;

        course.findPublishById(this.courseId).then(resp => {
          this.coursePublishVo = resp.data
        })
      }
    }
  }
</script>
<style scoped>
  .ccInfo {
    background: #f5f5f5;
    padding: 20px;
    overflow: hidden;
    border: 1px dashed #ddd;
    margin-bottom: 40px;
    position: relative;
  }

  .ccInfo img {
    background: #d6d6d6;
    width: 500px;
    height: 278px;
    display: block;
    float: left;
    border: none;
  }

  .ccInfo .main {
    margin-left: 520px;
  }

  .ccInfo .main h2 {
    font-size: 28px;
    margin-bottom: 30px;
    line-height: 1;
    font-weight: normal;
  }

  .ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
  }

  .ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
  }

  .ccInfo .main h3 {
    left: 540px;
    bottom: 20px;
    line-height: 1;
    font-size: 28px;
    color: #d32f24;
    font-weight: normal;
    position: absolute;
  }
</style>
